Fretting wear analysis through a mechanical friction energy approach: Impact of contact loadings and ambient conditions

2021 ◽  
pp. 131-167
Author(s):  
Siegfried Fouvry
Keyword(s):  
Energy Approach ◽  
Fretting Wear ◽  
Ambient Conditions ◽  
Wear Analysis ◽  
Friction Energy

A friction energy approach to quantifying lubrication under fretting sliding

2010 ◽  
Vol 22 (2) ◽  
pp. 53-71 ◽  
Author(s):  
T. Kolodziejczyk ◽  
S. Fouvry ◽  
G. E. Morales-Espejel
Keyword(s):  
Energy Approach ◽  
Friction Energy

Uncertainty evaluation of Ruiz parameter for spline coupling wear analysis

2016 ◽  
Vol 230 (16) ◽  
pp. 2888-2895
Author(s):  
Giulio Barbato ◽  
Vincenzo Cuffaro ◽  
Francesca Curà ◽  
Gianfranco Genta ◽  
Andrea Mura
Keyword(s):  
Fretting Wear ◽  
Uncertainty Evaluation ◽  
Specific Design ◽  
Wear Analysis ◽  
The Coefficient Of Friction ◽  
Mechanical Factors ◽  
Rotating Shafts ◽  
Spline Coupling ◽  
Mechanical Elements ◽  
Specific Working

Spline couplings are mechanical elements used to transmit power by joining two coaxial rotating shafts. The main damaging phenomenon on these elements is fretting wear, which can occur on teeth surfaces when there is a relative movement. Therefore, specific design criteria to evaluate teeth damage of spline couplings subjected to fretting wear are needed. In this work, the criterion proposed by Ruiz is considered and criticalities of the first Ruiz parameter are analysed by performing an uncertainty evaluation. The specific working misaligned conditions of a dedicated test rig were considered in this analysis. An uncertainty table allows the comparison of main geometrical and mechanical factors, evidencing their relevant effects. It shows the need of a deeper analysis on the coefficient of friction between the contact surfaces of spline couplings working in misaligned conditions.

scholarly journals Fretting Wear Performance of PVD Thin Films

2020 ◽  
Author(s):  
Brahim Tlili
Keyword(s):  
Coefficient Of Friction ◽  
Normal Load ◽  
High Surface ◽  
Surface Hardness ◽  
Hard Coatings ◽  
Displacement Amplitude ◽  
Fretting Wear ◽  
Experimental Investigations ◽  
Multilayer Coatings ◽  
Ambient Conditions

Nowadays, most surface treatments are realized through vapor deposition techniques as thin hard coatings to guarantee high surface hardness, low friction coefficient, and improve wear resistance. Several experimental investigations have led to the development of multilayer coatings in preference to the traditional TiN coating. In the current chapter, research was conducted on the fretting wear of (TiAlCN/TiAlN/TiAl) and (TiAlZrN/TiAlN/TiAl) multilayer coatings deposited by reactive DC (magnetron sputtering) of Ti-Al and Ti-Al-Zr alloys on AISI4140 steel. Fretting wear tests (20,000 cycles at 5 Hz) were conducted in ambient conditions, where the interaction between normal load and displacement amplitude determined the fretting regime. The influence of the normal load and displacement amplitude on the coefficients of instantaneous coefficient of friction and stabilized coefficient of friction is different in the two multilayer, coated steels. The PVD coating (TiAlZrN/TiAlN/TiAl) reduces the friction. The worn volume of coated AISI4140 steel is sensitive to normal load and displacement amplitude. The relation between worn volume and cumulative dissipated energy was established for the two coated steels. The energetic fretting wear coefficients were also determined. A multilayer (TiAlZrN/TiAlN/TiAl) coating has a low energetic wear coefficient.

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